$OpenBSD: patch-output_c,v 1.1 2017/04/27 20:56:42 espie Exp $
--- output.c.orig	Thu Apr 27 22:52:52 2017
+++ output.c	Thu Apr 27 22:53:13 2017
@@ -18,6 +18,7 @@
 
 extern int errno;
 
+void
 output(font, filename)
 struct font *font;
 char *filename;
